ᐅ Dormer Construction on a Semi-Detached House, Timber Frame, Neighbor Dispute

Created on: 27 Sep 2011 21:01
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Hausveränderung
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Hausveränderung
27 Sep 2011 21:01
As the owner of a semi-detached house, I want to build a dormer that ends at the boundary on the wall of the shared party wall. My architect has already prepared a building permit / planning application to be submitted to the building authority. It will be a timber construction. Can the neighbor – even after approval by the building authority – later raise objections that the dormer end, which terminates at the shared party wall, must be constructed with fireproof materials (masonry wall)?
The neighbor already has a dormer, which, however, ends about 2 m (6.5 ft) before the shared party wall.
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TomTom1
28 Sep 2011 07:26
Hello!

Why should the neighbor worry about this point? If your half of the house is on fire, it borders on the neighbor’s dormer’s air space—and air doesn’t burn.

In the opposite case, however, your house would quickly catch fire as well. By the way, there is a house like this near us—and it looks really awful. Passersby find it amusing, and if either side wants to sell later, both halves will pay the price—and this could definitely disturb the neighborly peace.

In this case, gaining a piece of wall without a slope would be an extremely expensive trade-off!

Regards,
TomTom1
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Bauexperte
28 Sep 2011 09:50
Hello,
Hausveränderung schrieb:
As the owner of a semi-detached house, I want to build a dormer that ends at the boundary wall of the shared party wall. My architect has already prepared a building application to be submitted to the building authority.

I hope your architect has already checked the feasibility of boundary construction; typically, dormers must maintain a distance of 1.5 m (5 feet) to up to 3.0 m (10 feet) at the highest point from the neighbor’s property.
Hausveränderung schrieb:
This is a timber construction. Can the neighbor, even after approval from the building authority, later raise objections that the dormer ending on the shared party wall must be constructed in a fire-resistant manner (masonry wall)? The neighbor already has a dormer, but it ends about 2 m (6.5 feet) before the shared party wall.

The building authority will most likely require—as a condition, if it even approves the proposal—that your neighbor gives consent; this consent is not related to the type of construction but to the resulting boundary building and all disadvantages it may pose to your neighbor.

Kind regards
T
T.H.
7 Oct 2011 07:38
Hello!

Normally, there is a minimum distance to be maintained between the dormer wall and the neighboring wall. In our case, a semi-detached house, this distance is 1.25 m (4 feet) according to North Rhine-Westphalia building regulations. If the neighbor agrees, it may be possible to fall short of the minimum distance. If the minimum distance is not maintained, the dormer wall facing the neighboring building must be constructed with fire protection rated F90.

Regards
T.H.